Coordinating Radio Resource Control Signaling with Upper Layer Direct Link Establishment Procedures

2. The apparatus of claim 1, wherein the direct communications response further comprises a layer 2 (L2) identifier for unicast communications.

3. The apparatus of claim 1, wherein the first radio resource control message comprises a request comprising a UE capability, a sidelink bearer configuration, the QoS parameter, or a transmit (Tx) profile parameter, or a combination thereof.

6. The apparatus of claim 1, wherein the upper layer signaling message comprises a direct communications request comprising a unicast type, the upper layer identifier of the target UE, the upper layer identifier of the UE, a layer 2 (L2) identifier for the unicast type, a second IP address configuration, or a nonce, or a combination thereof.

8. The apparatus of claim 7, wherein the direct communications response further comprises a layer 2 (L2) identifier for unicast communications.

9. The apparatus of claim 7, wherein the first radio resource control message comprises a request comprising a UE capability, a sidelink bearer configuration, the QoS parameter, or a transmit (Tx) profile parameter, or a combination thereof.

12. The apparatus of claim 7, wherein the upper layer signaling message comprises a direct communications request comprising a unicast type, the upper layer identifier of the target UE, the upper layer identifier of the UE, a layer 2 (L2) identifier for the unicast type, a second IP address configuration, or a nonce, or a combination thereof.

17. The method of claim 13, wherein the upper layer signaling message comprises a direct communications request comprising a unicast type, the upper layer identifier of the target UE, the upper layer identifier of the UE, a layer 2 (L2) identifier for the unicast type, a second IP address configuration, or a nonce, or a combination thereof.